Audicom 2.5mm Call Center Headset with Mic + Quick Disconnect Headphone for Telephone Grandstream GXP-2010 GXP-2020 GXP-2100 GXP-2110 GXP-2120 GXP-280 GXP-285 BT200 with 2.5mm Socket(702RQD25C) Direct connect over-the-head headset, No additional amplifiers or adapters required, Most easy setup headset solution. Noise canceling microphone to reduce background noise and Acoustic Shock Protection circuit to protect your hearing. Superior Call Center quality headset, excellent sound quality, lightweight, durable and comfortable for all day use. ONLY PURCHASE IF YOU HAVE ONE OF THE PHONE MODELS LISTED BELOW, CHECK OUR STORE FOR HEADSETS FOR OTHER PHONE MODELS OR CONTACT US FOR COMPATIBILITY GUIDE! NO Mic Mute / Volume Control built in.